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How to control the air supply setting of the bag duct

How to control the air supply setting of the bag air duct At present, the bag air duct system is more and more used as the air supply terminal device in various large places to improve the indoor air quality. In recent years, scholars at home and abroad have carried out certain researches on the air flow field, temperature field, pollutant concentration distribution and human thermal comfort in air-conditioned rooms based on the bag duct system. The indoor air distribution characteristics and the degree of influence of people in the polluted environment based on the bag air duct system, diffuser and other air supply devices are studied. The experimental results show that the air supply mode of the bag air duct system can create a good indoor air. Air quality, the human body has less wind blowing, and it can reduce the possibility of people being affected by the secondary pollution of air. Then, what effect does the air supply have on the air supply characteristics of the bag air duct? Through the method of field experiments, it is studied that the air supply volume affects the surface air velocity of the permeable bag air duct system when supplying air and the axial direction inside the cavity of the bag air duct system. The influence of air pressure distribution draws the following conclusions: (1) The 'self-rectification' effect of the permeable bag air duct system on the air is basically related to the large air supply volume, but the surface air velocity increases with the increase of the air supply volume. There is an approximate linear relationship between them. (2) With the increase of air supply volume, the total air pressure and static pressure in the cavity of the permeable bag air duct system gradually increase, the static pressure increase gradient and dynamic pressure decay gradient become larger and larger, and the static pressure at the end recovers. The phenomenon is more obvious.

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